22431320120 has 32 divisors (see below), whose sum is σ = 55058695920. Its totient is φ = 8156843520.

The previous prime is 22431320077. The next prime is 22431320137. The reversal of 22431320120 is 2102313422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22431320092 and 22431320101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25489697 + ... + 25490576.

Almost surely, 2^22431320120 is an apocalyptic number.

22431320120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22431320120 is an abundant number, since it is smaller than the sum of its proper divisors (32627375800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431320120 is a wasteful number, since it uses less digits than its factorization.

22431320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50980295 (or 50980291 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22431320120 its reverse (2102313422), we get a palindrome (24533633542).

The spelling of 22431320120 in words is "twenty-two billion, four hundred thirty-one million, three hundred twenty thousand, one hundred twenty".